Shoe spike



Sept. 13, 1949. v, u's y 2,481,703

SHOE SPIKE Filed Sept. 29, 1948 30 32 JIE. Z

. INVENTOR. l/OA/ m 00 TEUSTY BYWZWW HIS A TTOE/VEYS Patented Sept. 13, 1949 UNITED STATES PATENT OFFICE SHOE SPIKE Von Aldo Trusty, Dayton, Ohio Application September 29, 1948, Serial No. 51,746

3 Claims. (Cl. 36-59) This invention relates to a spike or calk and more particularly to a spike or calk adapted for use on .a golf shoe, although not necessarily so limited.

' Spikes or calks on various types of athletic shoes, and especially golf shoes, wear rather rapidly and that being the case it is quite desirable that such spikes or calks may be replaced, thereby prolonging the useful life of the shoes. Numerous attempts have been made to produce a spike or calk that is replaceable. Preferably, replaceable calks are threaded into position, as for example, the spike shown in the Gaines Patent No. 2,011,275 patented August 13, 1935. However, there is on difiiculty encountered with such a calk or spike and that is that they work loose and are lost. This is aggravated by the expansion and contraction of the soles of the shoes, which expansion and' contraction may be caused by moisture and dampness at certain periods, followed by a drying out of the soles. Leather, for example, expands upon the absorption of moisture resulting from dew, rain, sprinkling of the greens or moist ground. When the leather of 'the sole expands, it exerts a pressure against the under side of the exposed base of the spike or calk. Upon drying, the leather contracts and may pull away from the under side of the exposed base of the calk, permittting the calk or spike to be lost by unscrewing.

An object of this invention is to provide a spike or calk that is replaceable and that upon being adjusted into home position is permanently secured in this position during the useful life of the spike or calk, after which it may be removed and replaced by a new spike or calk that may, in turn, be locked in position in a like manner.

A further object of this invention is to provide a spike or calk having a disc-like base that is provided with a slot forming a lip terminatin in a pointed tongue that is adapted to be embedded into the sole of the shoe, preferably in such a manner that if the calk or spike tends to unscrew from the socket the point of the tongue is further embedded into the sole of the shoe, thereby preventing the calk from becoming unscrewed, which slot may also be used as a tool engaging slot for screwing the calk into position and unscrewing the calk after the pointed tongue has been removed from the sole of the shoe.

Other objects and advantages reside in the construction of parts, the combination thereof and the mode of operation, as will become more apparent from the following description.

In the drawings,

Figure 1 is a bottom plan view of a, sole incorporatin a plurality of calks secured in nonrotative position.

Figure 2 is a perspective view of a calk.

Figure 3 is a cross sectional view of the sole showing a calk inserted in position, but before being locked in position.

Figure 4 is a fragmentary cross sectional view through the sole, showing the calk secured in position.

Referring to the drawings, the sole [0 of the shoe is preferably provided with a plurality of threaded retaining members, such as sockets 12. These sockets may be similar to those disclosed in the Gaines Patent No. 2,011,275. The retaining member or socket may include a disc-like portion I4 provided with a plurality of tabs l6 embedded in the sole of the shoe. Thus, the retaining member or socket I2 is non-rotatably mounted so as to extend through a suitable opening in the bottom of the sole. In the particular socket shown, it is provided with an internally threaded cavity.

The calk or spike [8 includes a convex discshaped base 28, a frustrum conical or calk portion 22 and a threaded cylindrical portion 24. The disc portion 28 is provided with a slot 26 that forms a portion of a chord forming a lip 3|] provided with a pointed tongue 32 that, before insertion, is pointed towards the sole of the shoe.

As may be best seen in Figure 2 disclosing the calk before it is attached to the shoe, the lip 30 is deflected from the disc-like portion, so as to permit the tongue 32 to remain out of contact with the sole of the shoe when the calk is screwed to the retaining member l2. After it has been tightened by means of a suitable wrench or instrument, the tongue 32 is driven into the sole of the shoe. The tongue 32 preferably is so directed that in the event the calk [8 tries to unscrew itself from the socket, the unscrewing of the calk will force the tongue 32 deeper into the sole.

From the foregoing, it can readily be seen that even though the sole may shrink or contract, the calk I8 is secured in position so as to be permanently locked in position during the useful life of the calk.

Due to the fact that golf shoes are oftentimes worn on sidewalks and pavement or cobblestones, on gravel and on hard surfaces, the calks wear down very rapidly. Therefore, the calks wear out more rapidly than do the shoes. Upon the calk portion 22 being worn flat, a screw driver or any other suitable instrument may be pried under the lip 30, so as to remove the pointed tongue 32 from the sole of the shoe, permitting a suitable implement or tool to be used to unscrew the calk from the socket to allow for replacement of the Worn calk with a new calk, thereby prolonging the useful life of the golf shoe.

Although the retaining member l2 has been shown as the female member and the oalk as the male member, the retaining member can constitute the male member and the call: the female member within the purview of this invention.

Although the calk has been described for use with golf shoes, these calks may be used on other types of athletic shoes.

that the calks may be used on other types of shoes where it is found desirable to prevent slippage.

Furthermore, the calksare not necessarily limited to athletic shoes, in-

Although the preferred embodiment of the de- I vice has been described, it will be understood that within the purview of this invention various changes may be made in the form, details, proportion and arrangement of parts, the combination thereof and mode of operation, which generally stated consist in a device capable of carrying out the objects set forth, as disclosed and defined in the appended claims.

Having thus described my invention, I claim:

1. A calk adapted for usewith a threaded calkreceiving socket fixedly attached to a sole of a shoe, said calk including a disc-like base portion provided with a frustrum conical calk portion projecting outwardly from one side of the disclike base portion and provided with a threaded projection projecting outwardly from the side of the disc-like base portion opposite the side having the frustrum conical calk portion, said threaded portion threadedly engaging the calk-receiving 4 7 socket, said disc-like base portion being provided with a slot in the margin thereof, forming a lip portion terminating in a deflected pointed tongue portion embedded in the sole of the shoe so as to prevent removal of the calk during the useful life thereof.

2. A calk adapted for use with a threaded calkretaining member fixedly attached to a sole of a shoe, said calk including a disc-like base portion provided witha calk portion projecting outwardly from one side thereof, and provided with a threaded portion on the opposite side thereof adapted to engage the threaded portion of the calk retaining member, said disc-like base portion being provided with a slot forming a lip portion terminating in a deflected tongue portion embedded in the sole of the shoe so as to prevent unscrewing of the calk from the retaining member.

3. A calk adapted for use with a threaded calkretaining member fixedly attached to a sole of a shoe, said call: including a disc-like base portion normally seated against the under side of the sole of the shoe, said calk including a threaded portion threadedly engaging the retaining member, said disc-like base portion being provided with a slotin the margin thereof forminga iip' portion terminating in a deflected tongue portion embedded in the sole of the shoe, the tongue portion be-i ing so positioned that in the event the calk tends to unscrew from the retaining member the tongue 7 portion is embedded deeperinto the sole to theree by prevent therem'oval-of the call: during the use ful life thereof. v a

VON ALDO TRUSTYJ No referencescited. 

